package com.viu.technology.config.netty;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

@Configuration
public class NettyConfig {

	@Bean
	public Executor rabbitListenerExecutor() {
		ThreadPoolTaskExecutor executorFactory = new ThreadPoolTaskExecutor();
		// 配置核心线程数
		executorFactory.setCorePoolSize(100);
		// 配置最大线程数
		executorFactory.setMaxPoolSize(100);
		// 配置线程池中的线程的名称前缀
		executorFactory.setThreadNamePrefix("chat-durable-");

		// rejection-policy：当pool已经达到max size的时候，如何处理新任务
		// CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
		executorFactory.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
		// 执行初始化
		executorFactory.initialize();
		Executor executor = Executors.newCachedThreadPool(executorFactory);
		return executor;
	}

}
